Of those two guns and cartridges, I say the 308 is a better carbine cartridge than the 270. It suffers much less with shot out of a 20" barrel. If you like the M77, why not get that in a 308?I have 2 rifles to choose from that I was going to upgrade and add some good bases and rings and high dollar glass 2 but I can only afford to do this to one and I am having a hard time deciding which.
Rifle A = Ruger M77 ultralight .270 with 20" blue barrel with wood stock
Rifle B = Remington Model 7 ss/syn .308 with 20" barrel
Help me decide.